Moderna And Pfizer Vaccines Prevent Infection As Well As Disease: Key Questions Remain

Ever since the US vaccine rollout officially commenced in December, a question that has been top of mind is whether the messenger RNA (mRNA) vaccines created by Moderna and Pfizer/BioNTech would perform as well under real-world conditions as they did in the laboratory. Though the clinical trials of mRNA vaccines proved they were largely effective at preventing disease, their ability to prevent infection remained unknown. Thanks to a study published yesterday by the US Centers for Disease Control and Prevention, we now have our answer. According to the study, which was conducted on nearly 4,000 healthcare workers, first responders, and other essential workers at the frontlines in eight locations across the country, the mRNA vaccines are 90 percent effective at preventing infection. That means in addition to stopping the development of Covid-19 symptoms, they can stop the disease from spreading from one person to another, too. Read full article onĀ Forbes Originally published on Forbes (March 30, 2021)
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